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4-2 | Thermox CG1000 Oxygen Analyzer
Chapter 4 for help on setting up the alarms andanalog outputs and
Appendix A for help on setting up serial communications.
7.
Perform a regular calibration.
8.
Read the sample gas.
You should do a verify operation at regular intervals to determine if a cali-
bration is needed. It is up to you to determine how accurate your instru-
ment needs to be for your application, then set this acceptable tolerance
of the verify test gas using the Configure Verify menu option from the
Calibrate key.
Password Restrictions
For menu options where you can change system settings and a pass-
word exists, you will be required to first enter the password to access
that menu's functions. See Chapter 4 for help on how to create a system
password.
Display
The display allows you to view different types of information. You define
which information to place on the first three lines of the display using the
Display option from the Setup key. Note that you can also use the Display
menu option to place your own text message on one of the first three
lines. The last display line is reserved for system and error messages.
If an alarm condition exists, alarm information in the form of an Up or
Down arrow (corresponding to a high or low alarm) will appear next to
the process reading on that display line. See Chapter 4 for help on setting
up your alarms.
Auto Ranging Feature
The CG1000 system also includes an auto ranging feature. If the oxygen
reading falls below 0.5% O
wise, the system always displays readings using the percent scale.
, the display switches to the ppm scale. Other-
2
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